Zoho launched Zoho Mail for the public, and provides offline support and mobiel support. Zoho uses Google Gears technology to enable offline functionality.
You can download images and attachments as well in offline mode. Zoho Mail automatically detects your connectivity and switches to online/offline modes, cool, isn’t it!
You can also configure Zoho Mail to send and receive emails from other POP email accounts. Zoho Mail doesnot have any advertfree and also has no storage limit.